Cited by 20Evolution and Genetic DynamicsFungal and yeast genetics researchGlycosylation and Glycoproteins Research

Evolutionary rescue of phosphomannomutase deficiency in yeast models of human disease

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Vignogna, Ryan C, Allocca, Mariateresa, Monticelli, Maria, Norris, Joy W, Steet, Richard, Perlstein, Ethan O, Andreotti, Giuseppina, Lang, Gregory I·2022·eLife

Published version of a preprint

Abstract

The most common cause of human congenital disorders of glycosylation (CDG) are mutations in the phosphomannomutase gene PMM2, which affect protein N -linked glycosylation. The yeast gene SEC53 encodes a homolog of human PMM2 . We evolved 384 populations of yeast harboring one of two human-disease-associated alleles, sec53- V238M and sec53 -F126L, or wild-type SEC53 . We find that after 1000 generations, most populations compensate for the slow-growth phenotype associated with the sec53 human-disease-associated alleles. Through whole-genome sequencing we identify compensatory mutations, including known SEC53 genetic interactors. We observe an enrichment of compensatory mutations in other genes whose human homologs are associated with Type 1 CDG, including PGM1 , which encodes the minor isoform of phosphoglucomutase in yeast. By genetic reconstruction, we show that evolved pgm1 mutations are dominant and allele-specific genetic interactors that restore both protein glycosylation and growth of yeast harboring the sec53 -V238M allele. Finally, we characterize the enzymatic activity of purified Pgm1 mutant proteins. We find that reduction, but not elimination, of Pgm1 activity best compensates for the deleterious phenotypes associated with the sec53 -V238M allele. Broadly, our results demonstrate the power of experimental evolution as a tool for identifying genes and pathways that compensate for human-disease-associated alleles.

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Authors
Vignogna, R. C., Allocca, M., Monticelli, M., Norris, J. W., Steet, R., Perlstein, E. O., Andreotti, G., & Lang, G. I.
Affiliations
  • Lehigh University (US)
  • National Academies of Sciences, Engineering, and Medicine (US)
  • Greenwood Genetic Center (US)
  • Istituto di Chimica Biomolecolare (IT)
Corresponding author
Lang, Gregory I
Venue
eLife
Published
2022-10-10
Volume
11
ISSN
2050-084X (ISSN-L)
OpenAlex
W4303986851
Cited by
15
References
87
Citations by year
2025: 3 · 2024: 7 · 2023: 3 · 2022: 2
FWCI
3.02
Type
journal article
Language
en
Open access
Locations
  • eLife (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • CNR ExploRA (submittedVersion)
Funders
National Institutes of Health (R01GM127420, P20GM139769)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Evolution and Genetic Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Glycosylation and Glycoproteins Research
Keywords
phosphomannomutase deficiency, PMM2, congenital disorders of glycosylation, N-glycosylation, experimental evolution, compensatory mutations, PGM1, phosphoglucomutase
MeSH terms
Humans, Phosphoglucomutase, Saccharomyces cerevisiae, Phosphotransferases (Phosphomutases), Congenital Disorders of Glycosylation, Saccharomyces cerevisiae Proteins, Mutant Proteins

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